早在1912年，德国科学家弗里德里克（汤姆·伯克 Tom Burke 饰）提出了“泛大陆”的理论，意指地球上的大陆曾经全部都连在一起，因为地壳运动导致碎裂才形成了如今的格局。1939年，尽管战争正在激烈的进行当中，德国人还是排遣了一只海洋考察队前往北极腹地斯瓦尔巴特群岛，去寻找更多能够支持这一理论的证据。
这次出行的，除了弗里德里克本人和他的助手莱尼（詹妮特·海因 Jeanette Hain 饰）外，还有来自世界各国的科学家们，他们在俄罗斯船长（斯文·诺丁 Sven Nordin 饰）的带领下扬帆起航，向目的地驶去。一边是云谲波诡的无尽海洋，一边是变幻无穷的战争局势，大陆上发生的一切，无不影响着科学家们之间关系微妙的平衡。

马洛（迪克·鲍威尔 Dick Powell 饰）是一名独来独往的私家侦探，某日，马里特（Douglas Walton 饰）找到了马洛聘他当自己的保镖，结果马洛却莫名其妙的挨了一顿打。之后，一个叫安（安妮·雪莉 Anne Shirley 饰）的女孩现身，她告诉马洛，他所遭遇的一切和她的继母格雷尔夫人及其所拥有的翡翠有着千丝万缕的关联。对翡翠深感好奇的马洛决定将这一连串的事件调查个水落石出。
在安的协助下，马洛对事件的全貌渐渐的有了了解，而隐藏在背后的，是安的父亲（迈尔斯·曼德 Miles Mander 饰）。不仅如此，不久之前，马洛受雇寻找一个名叫维尔马的女子的下落，这名女子竟然也被牵连进了翡翠的案件之中。

Helen Stoner needs the great man's help. She lives in a country mansion with her flamboyant and sinister guardian Grimesby Raylott, who has travelled abroad and brought home some souvenir livestock. Recently her sister Julia, about to be married and made by Raylott to sleep in a bed that was screwed to the floor, died in mysterious circumstances. Her final words referred to a "speckled band." Helen is fearful for her own safety and Holmes and Watson investigate.

Young Alice Mason wishes to start a family, but because her own has been deemed "defective" by the state health authorities—her parents are lazy alcoholics who continue breeding, and her siblings are disabled, have mental problems or are imprisoned—she is ordered by a court to undergo sterilization so that her family's "defective genes" won't be passed on to any further. Her boyfriend Jim and a kindly priest search desperately for a way to stop the forced surgery before it's too late.

Pulp hero "The Spider" seeks to destroy all criminals. In this serialized adventure, he battles The Octopus, who intends to replace the government of the United States.